Sparking device.



0. He STONEERIDGE.

SPARKING DEVICE. APPLIOAT ION FILED J'AlTplB, 1910.

July 5, 1910.

il'drll"!!! w w m a A 5 CHARLES H. STONEBRIIDGE, or new YORK, N. Y.

T sranmne nnvrcn I Application nice Januar'yis, 1910. 'serial'nofissaess. 1

To qltwlwm iii ruby concerns, I Be it knownthat '1, CHARLES, H. S'ronnmnen, a citizen of the United States, and

i residing at New York, in the cbuntyof New York and State of New York, have inventedcertain new and useful Improvements in Sparking Devices, of which the following is a specification; such as will. enable thosef skilled in the art to whichit appertains to 10.

make and use the same. TlllS nvention relates to sparlnng plugs for useln connection with lnternal combus- -tion engines, and the object thereof is to pro- :vide; an improved device of this class which is simple in construction and operation and the construction ofwhich is such that'the dej vices forming the spark gap may be readily cleaned and kept in proper condition for use I without removing the plug from the engine.

The invention is fully, disclosed in the following specification, of which the accompanying drawing forms a part, in which-the separate parts of my improvement are designated by suitable reference characters in each of the views, and in which V Figure 1 is a sectional View showing one of my improved sparking plugs connected with an engine; Fig. 2 a similar view showing the parts in a different position; Fig. 3 a section on the line-3--3 of Fig. 1, and

I Fig. 4 a side view of a detachable binding post device which I employ. 1

In the drawing forming part of this specification I haveshown at a a part of the wall of a cylinder of an internal combustion engine, and. at b y improved sparking plug.

In the construction of the sparking plug b I provide a screw threaded tubular plug 0, which is adapted to be screwed into the wall of the enginein the usual manner and which,

in the form of constructionshown, is provided at its inner end with a tubular extenonc, the sides of which are open as shown Elli/1' and the; end portion of which is also provided with .an opening 0 around which .arefinwardly directly sparking devices 0 which are arranged in the form of a circle and three of which are preferably employed andthe inner ends ogt which are beveled inwith-a radial extensionor arm jtawith-which wardly as clearly shown in Figs. 1 and 2.

The outer end of the screw threaded plug 0 is provided with an enlarged annular head 0 in which is an annular shoulder 0 and screwed into the annular head 0 is a threaded sleeve 0? provided with an annular head (l? which forms aninternal annular 1 shoulder as, iina at head army is made in :S pecificationnf Letters rat-cut; v

the formof a nut so as to facilitate the operc and removing said "sleeve when desired.

I also provide an insulating dplug-'6, which is tubular inform or provide with a central longitudinal bore 6 andsaid insulating plug 6 is provided centrally with anannular enlargemente and isfittedinto the parts 0 and d as clearly shown in Fig; 1. In assem bling these'parts the insulating plug 6 is first, inserted into the tubular plug :0 and the sleeve al is then screwed into position and this annular enlargement e of'the insulating plug 6 between the shoulders 0 and 05 of the parts 0 and d, and between'said shoulders and the annular enlargement e of said parts are preferably placed packings 5 The insulating plug '6 progects outwardly from the annular head (I? of the sleeve d and passed through the central bore of said plug is a tube 9, the outer end of which is rovided witha cylindrical casing g which lorms a head for. said tube, and passing through and movable through the outermend of the head 9 of the tube 9 and through said tube is a rod it, the inner end of which is provided with a conical head W, the apeii of which is in a line with the center of the circle around which the sparking devices (2 are placed.

The inner end of the: tube 9, in the form of construction shown isprov'ided with an annular bead g which holds it. in the insulating tubular plug 6 and the base of the conical head it of the rod h is provided with a corresponding annular groove adapted to receive said head; 1 I e The rod h is provided within the head 9 j of the tube g with a collar it between which and the outer-end ofg'said heady is -placed a spiral spring a, and the outer end of the rod h is provided with ahead it? which is preferably cylindrical in form and secured to said rod by ascrew h- I alsoprovide a contact device 3', which in the construction 'shown,-1s made-1n the form of a circular plate provided at one-side..=witli a iradial slot or opening 7' and at gthe. opposite side with an ordinary timer m and a wire 777/ .ation of screwing the sleeve 2? into the head connects the battery'k with the engine or with the wall a of the cylinderof the engine with the ground. I The operation will, be readily understood wtfrom the roregeing description when taken in connection w th the accompanying drawiigig and the following statement thereof. enever it is desire to place the device in operation the rod h is pulled outwardly by means oi the headh and the contact de- Vice 7' .is passed between said head and the head '9 of the ,tube 9, as clearly shown in Fig. "1, and in this operation. the rod it [passes into the slot-or opening j in the conact device or plate 7'. This holds the rod h i a its outermost condition against the operation ofthe spring 2' and as shown in Fig 'l, a lid as. the current passes through the circuit formed by the parts k, m, m j, 70, 0 c, c and a,'and the timer m is operated in the usual manner, the necessary sparks will be produced in the spark gap or gaps between the parts I and c as will be readily understood Whenever it is desired to clean the adjacent surfaces of theparts k and c the contact plate or'device j is withdrawn, the circuit is broken, the s ring a forces the rod Jr. in'wardl. as shown 1n Fig. 2 so that the head h -o said rod will come in connection having a screw threaded extension provided with circularly arranged sparking contacts 1 an insulating tubular plug mounted in an with the sparking..device 0 and by rotating said rod by-means of the head h thereof the said surfam maybe thoroughly cleaned and placed in proper operative condition, and

' by again inserting the contact device or plate j-into the position shown in Fi' 'lxthe device inbe in condition or operation.

' It w 111 be understood that the inner end of the screw threaded. plug 0 forms simply a support or supports for the sparking contacts 0 and this support or supports may be made in" any desired manner. It will also .beunde rstood that the screw threaded'tubuhr plug ,7 '0 with its head c, and the. threaded sleeve .d with' its head 03 constitutes a casing or hold er for the insulating plug a, and modifications of these parts as well as of other parts of the device may be made, within the scope of the appended claims, without departing from the spirit of my invention or sacrificing its advantages.

Having-fully described my invention,'what I claim as new, and desire to secure by Letters Patent, is

1. A sparking plug for .nternal combus-" tion engines, comprising a casing or holder passing thr ough said casing or holder, a rod passing through said insulating plug andprovided at its inner end with {a conical head, said rod being movable longitudinally through said plug, a tension device for forcing said'rod inwardly and a detachable contact device provided with a binding post and adapted to hold said rod in its outermost position.

2. A sparking plug for internal. vcom bustion engines, comprising a casing or holder adapted to be screwed into the wall of a cylinder of said engine and provided at its inner end with sparking devices arranged in a circle, an insulating tubular plug mounted in said casing or holder and passed therecylinder ofthe engine and extending'therethrough and provided at its inner end with sparkin devices, a tubular insulating plug through, a"rod passed through said insulating plug and provided at its inner end with a head adapted to operate in connection with said sparking devices, a tension device for forcing said plug inwardly and a contact device adapted to be detachably connected with the outer end of said rod and to hold said rod in its outermost posiiion, said rod being also provided at its outer end with a head whereby it may berotated.

4:. A sparking plug for internal combustion engines, comprising a casin or holder adapted to be'secured in a wall 0 a cylinder of the engine, and provided at its inner end with a suitably su ported sparkin device, an insulatin tubu ar plug mounted in said casing or ho der, a rod passing through said mounted in said holder and extending thereinsulating plug and the inner end of which is adapted to operate in connection with said' sparking device, said }rod being movable longitudinally through said plug, and a detachable contact device adapted to hold said rod in its outermost position.

In testimony that II claim the foregoing as my inyention' I have signed my name in presence of the subscribing witnesses this 14th day of January 1910, V I

CHARLES-H. LSTONEBRIDGE; Witnesses: I

C.E. MULREANY,; B. M. RYEBSON. 

